Experimental Demonstration of In-Field 400G Coherent Metro-Access Convergence

Rizzelli, G.; Casasco, M.; Pagano, A.; Ferrero, V.; Gaudino, R.

doi:10.1364/ofc.2024.w1j.1

Optical Fiber Communication Conference (OFC) 2024 2024

DOI: 10.1364/ofc.2024.w1j.1

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Experimental Demonstration of In-Field 400G Coherent Metro-Access Convergence

G. Rizzelli,

M. Casasco,

A. Pagano

et al.

Abstract: We present an experimental demonstration and analytical scaling of optically amplified metro combined with PON access transmission over installed fibers, using coherent 50GBaud PM-16QAM and discuss the technical feasibility of future 400G metro-access convergence.

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Cited by 3 publications

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Scalability Study of All-Photonics Metro/ Access Network With Simultaneous Reception of Wavelength-Multiplexed Control and Main Signals

Igarashi,

Kaneko,

Kimura

et al. 2024

IEEE Photonics J.

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Scalability Study of All-Photonics Metro/ Access Network With Simultaneous Reception of Wavelength-Multiplexed Control and Main Signals

Igarashi,

Kaneko,

Kimura

et al. 2024

IEEE Photonics J.

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Planning tools for next-generation DSP-based passive optical networks above 50G [Invited Tutorial]

Rizzelli,

Gaudino

2024

J. Opt. Commun. Netw.

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Next-generation optical access networks are evolving towards ultra-high bit rates (above 50 Gbps per wavelength) and extended fiber reach architectures. This trend will likely push the optoelectronics to their limits, thus requiring impairment compensation based on digital signal processing (DSP) techniques in the transceivers. In this paper, which is an invited follow-up of a tutorial given at ECOC 2023, we first present an overview of this evolving scenario and then propose a unified analytical model that is able to predict the performance of these new systems for both direct-detection and coherent transceiver types. We believe that this model can be useful for preliminary scalability studies of new access architectures (as it happens in international standardization bodies). Moreover, when they are deployed, it can be useful as a base for network planning tools, particularly if future transceivers will be, as expected, highly reconfigurable at the DSP level.

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Metro-Passive Optical Network Convergence: 400 Gbps Fully Coherent Transmission Using Pre-Commercial Transceivers

Casasco,

Rizzelli,

Pagano

et al. 2024

Electronics

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The capacity of passive optical networks (PONs) is continuously increasing, and it has been standardized up to 50 Gbit/s. The two main standardization organizations, IEEE and ITU-T, are actively working on the next-generation PON, which appears to be a 100G-PON still based on intensity modulation. Even though direct detection would be preferred for its cost and simplicity, the choice of coherent detection seems inevitable when the bit rate reaches 200–400 Gbit/s, specifically to guarantee the optical power budget requirement of an access network. The introduction of coherent systems in the PON scenario, allowing high-power-budget performances, should encouragetelecom operators to merge the metro and access networks into a single domain. This paper analyzes the mentioned metro + PON convergence scenario with experimental results focusing on a 400 Gbit/s fully coherent transmission (50 GBaud PM-16QAM). We characterize three different transceivers, two of which are pre-commercials. We perform experimental demonstrations, with real urban fiber and laboratory set ups, of the metro–access convergence network in terms of the minimum OSNR value of the metro path, producing an acceptable optical power budget within the access network. Our work demonstrates feasibility of merging the metro–access network by using currently coherent optical transceivers for PON applications.

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Experimental Demonstration of In-Field 400G Coherent Metro-Access Convergence

Abstract: We present an experimental demonstration and analytical scaling of optically amplified metro combined with PON access transmission over installed fibers, using coherent 50GBaud PM-16QAM and discuss the technical feasibility of future 400G metro-access convergence.

Cited by 3 publications

References 5 publications

Scalability Study of All-Photonics Metro/ Access Network With Simultaneous Reception of Wavelength-Multiplexed Control and Main Signals

Scalability Study of All-Photonics Metro/ Access Network With Simultaneous Reception of Wavelength-Multiplexed Control and Main Signals

Planning tools for next-generation DSP-based passive optical networks above 50G [Invited Tutorial]

Metro-Passive Optical Network Convergence: 400 Gbps Fully Coherent Transmission Using Pre-Commercial Transceivers

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